Poplar seedlings planted in summer are transplanted in the spring to cultivate large-sized seedlings. The economic benefit is 3-5 times that of the seedlings, and the growth amount is about one and a half months earlier. It is simple and easy to manage. It does not compete for agriculture and saves materials and costs. Low, it is actually a new way to cultivate poplar seedlings. First, prepare before plugging in. Choose fast-growing, high-quality and high-yield varieties with strong adaptability, such as 80351, 72 Yang and 69 Yang. From July 20 to September 20 each year, the cuttings begin to breed at the time of semi-lignification. A large number of bred to the nursery to the seedlings of the year of litchi and thin and weak seedlings. Do 1 inch wide and 20 cm long. The matrix is ​​made up of river sand, ash, fine cinder, etc., and it takes the same as any one, accounting for 70%, and the soil accounts for 30%. The soil bactericide is evenly mixed for use. Second, cut the bar. General pruning starts at 16 o'clock in the afternoon. Rainy days and cloudy days are better. Take side cutting, side cutting and side cutting. Cuttings with 3 leaves for the ear, each 3-4 branches cut, fine branches do not, cut up and down from the handle base 2 cm, slightly oblique on the flat, upper leaves cut a small half, the next two leaves cut off with a handle. After the cutting, the cuttings are inserted into the trampoline at a spacing of 20 cm and 10 cm and reach the base of the upper leaves. Third, insert management. After inserting the cuttings, immediately pour enough water, shade for 10-12 days, spray water frequently during the day, and naturally be exposed on rainy days. 3-5 days after injection, spray 25% carbendazim 250 times. Spikes and leaves should be detected during the period to prevent rotting infectious diseases. 8-10 days after the rooting, shoots should be picked up and the amount of spray water should be reduced. Light is gradually increased in the morning and evening until the cover is released. The reduction of moisture and light should be based on the fact that the shoots are not wilting. This law manages the survival rate of more than 90%. Fourth, seedling management. When the new shoots are about 5 cm in length, they are artificially supplemented with fertilizer. Fertilizer is mainly composed of rotting liquid fertilizer, and the ratio of water to water is 1:12. After that, it is applied every 7-10 days, and water and fertilizer are gradually increased to a ratio of 1:8. During the spraying, the leaves were sprayed 2-3 times and sprayed with 0.2% urea solution or 0.1-0.2% potassium dihydrogen phosphate solution. At the same time pay attention to drought relief, noon sun visor to prevent sunburn, every 10 days spray 25% carbendazim 250 times liquid 1 times. As long as the water and fertilizer are in good condition, the early seedlings can grow up to about 1.5 centimeters.
Blood System:
Blood system is also called circulatory system.
For the treatment of diseases of the circulatory system:
According to the American Heart Association, cardiovascular disease is the leading cause of death in the United States. Because of its vastness and critical nature, it is one of the systems of the body most prone to disease.
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One of the most common diseases of the circulatory system is arteriosclerosis, in which the fatty deposits in the arteries causes the walls to stiffen and thicken the walls. According to the Mayo Clinic, the causes are a buildup of fat, cholesterol and other material in the artery walls. This can restrict blood flow or in severe cases stop it all together, resulting in a heart attack or stroke.
Stroke involves blockage of the blood vessels to the brain and is another major condition of the circulatory system, according to Mitchell Weinberg of the North Shore-LIJ Health System. [Risk factors include smoking, diabetes and high cholesterol," he noted.
Another circulatory disease, hypertension - commonly called high blood pressure - causes the heart to work harder and can lead to such complications as a heart attack, a stroke, or kidney failure, the NLM noted.
An aortic aneurysm occurs when the aorta is damaged and starts to bulge or eventually tear, which can cause severe internal bleeding. This weakness can be present at birth or the result of atherosclerosis, obesity, high blood pressure or a combination of these conditions, according to Weinberg.
Peripheral arterial disease (also known as PAD) typically involves areas of narrowing or blockage within an artery, according to Jay Radhakrishnan, an interventional radiologist in Houston, Texas. In addition, chronic venous insufficiency (also known as CVI) involves areas reflux (or backward flow) within the superficial veins of the lower extremities.
PAD is diagnosed with noninvasive testing including ultrasound, CT scan, and/or MRI. Ultrasound is the least expensive of these methods, but also gives the least amount of detail, as CT and MRI show a much higher degree of anatomic detail when identifying areas of narrowing/blockage within an artery. CVI is diagnosed with ultrasound as the venous reflux can be measured accurately by ultrasound, which ultimately guides treatment.
Blood System
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